Check this thread for PPF:
https://www.cadillacvnet.com/forums/threads/ct4v-bw-ppf-who-has-done-it-and-what-panels.4135/unread
I did XPELL ultimate plus on front bumper, hood, fenders, headlights, mirrors, A-pillars, roof line, side rockers, lower door panels, luggage strip, and door cups...